Ashamed of being jealous

Just had another girlfriend have a baby and I'm so happy for her but a part of me feels jealous. I hate this feeling and wish I didn't feel this way anyone told me they're pregnant. It makes me feel terrible for being an undercover "hater" To top it off she tells me about how easy her pregnancy and delivery were to me knowing I'm 4 months TTC. Anyway just venting I'm sure some of you feel the same way.